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Boiling Water Tap Installation: What You Need to Know

Posted by Sinks on 13th Aug 2025

Boiling Water Tap Installation: What You Need to Know

One of the most significant kitchen improvements you can do is install a boiling water tap. It has a modern, innovative look in addition to rapid boiling water for cleaning, tea making, and cooking. And with us today, you get to learn about the process to install a boiling tap in your space. Consider the detailed guide below, whether you choose the self-installation approach or hire someone to install it for you.

Boiling Water Tap Installation: Detailed Steps

Before starting the boiling water tap installation, there are specific precautionary measures that you should follow if you plan to install the tap in the kitchen/bathroom. Most boiling water tap types require sufficient ventilation, a power source for the boiler tank, and a cold-water input. Follow the steps below before installing and take further steps during the installation.

What You Need Before Installing a Boiling Water Tap

As you decide to install the hot water tap, make sure that your bathroom or kitchen meets the following requirements,

  1. Tools & Accessories: Adjustable wrench, screwdriver, drill with hole saw, PTFE tape, and the manufacturer-provided hoses, fittings, and boiler unit accessories. 
  2. Moderate Water Pressure: Verify the water pressure levels as suggested by the manufacturer.
  3. Power Supply: To power the boiler tank, most boiling water taps require a 13-amp outlet located beneath the sink.
  4. Enough Space: The boiler tank and filtration system must have sufficient space beneath the sink.
  5. Water Supply: You must connect directly to your mains cold water supply.

How to Install a Boiling Water Tap – Step-by-Step

If you want to know how to install a boiling water tap, here’s the general process:

  • Step 1: Shut off the water supply

Turn the main off, release the remaining water by opening the kitchen tap.

  • Step 2: Prepare the sink/counter top

You’ll need to drill an extra hole according to your tap’s size specifications.

  • Step 3: Fit the boiling water tap

Insert the tap into the opening and fasten it using the included mounting bracket.

  • Step 4: Connect the boiler tank & water supply

Now, try to connect the boiler unit's tap hoses/pipes to your mains water supply.

  • Step 5: Turn the power on

After the above step, plug in the boiler unit, allow it to fill the tank, and heat it to the correct temperature.

  • Step 6: Testing Leaks

Before you finish, do a trial and run the tap to check for water flow, temperature and how the boiler unit is working. This way, you can be aware of and check the product's working ability.

Once you've completed all the above steps, you’ve installed your boiling water tap—congratulations on the upgrade!

Note: For 3-in-1, 4-in-1 boiling water taps or commercial filter taps, the installation process is similar to the above. But it's recommended to take professional help.

Boiling Water Tap Installation Cost

Well, at times, even if you know how to install a boiling water tap, using a qualified plumber ensures proper installation and keeps your warranty valid. The cost of installing a boiling water tap depends on the job's complexity, your location, and whether additional plumbing or electrical work is required. The following is just an estimation of how much it would cost to install,

  • DIY/Self-Installation: You will need to spend around £50 on the necessary tools.
  • Professional Installation: You will be charged £100 – £250 for complete installation by a certified plumber.
  • Complex Installation: In case of wear and tear situations or electrical upgrades, pipe rerouting, or countertop drilling, it can be £250+ and more.

Suggested Read: Why a Boiling Water Tap is Cost-Effective? Guide

Common Boiling Water Tap Installation Mistakes to Avoid

Make sure to avoid or prevent the following issues as you install the instant hot water tap.

  • Incorrect water pressure setup – Can damage the boiler unit.
  • No electrical safety checks – Risk of short circuits or shocks.
  • Loose fittings – Lead to leaks and water damage.
  • Skipping the filter – Shortens the lifespan of your tap.

Maintenance Tips After Boiling Water Tap Installation

The ease of use that a boiling water tap provides is what makes it efficient and high in demand. But it's also very essential to take care of it. Hence, make sure to keep up with the following regularly:

  • Replace filters every 6–12 months to keep water tasting fresh and prevent limescale.
  • Regularly descale the boiler, particularly in places with hard water.
  • Check hoses and fittings for wear or leaks.
  • Wipe the tap and spout with a soft cloth to avoid scratches.
  • Keep electrical connections dry and away from splashes.
  • To preserve performance and warranty, adhere to the manufacturer's service schedule.

How to Install Quooker Boiling Water Taps: Video Tutorials

Installation of PRO3 B
Installation of COMBI B+
Installation of CUBE
Resetting CUBE

FAQ’s

  1. How long does it take to install a boiling water tap?

Depending on the skill level one has with tools and equipment, the time required to complete a boiling water tap installation can vary significantly between professionals and DIY enthusiasts.

  1. Can I install a boiling water tap myself?

Indeed, with basic plumbing knowledge and tools & accessories, you can learn to install a boiling water tap yourself. But professional installation is recommended.

  1. How much does a boiling water tap installation cost?

Generally, the cost of installation in the UK ranges from £100 to £250 for professional installation, depending on the complexity.

  1. Do boiling water taps need electricity?

Yes, most models require a 13-amp power socket under the sink to heat the water.

  1. Is a filter necessary for a boiling water tap?

Yes, the majority of well-known manufacturers sell filtered boiling water taps. If not, having one is advised as it will maintain the water's clarity and enhance its quality. 

Conclusion

Installing a boiling water tap may improve your kitchen's appearance, save time, and reduce clutter. Following the correct procedures will guarantee that your boiling water tap operates flawlessly for many years to come, whether you're calculating the cost of installation or learning how to do it yourself. Hence, shop via Sinks.co.uk, buy from our vast collection of boiling water taps with safety assurance and competitive pricing from our top brands like Quooker, Franke, Perrin & Rowe, for ultimate convenience.